package com.student_exam_system.pojo;

import com.alibaba.fastjson.annotation.JSONField;
import com.student_exam_system.config.ConstMsg;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class LoginUser implements UserDetails {
    private User user;

    private List<String> permissions;

    public LoginUser(User user, List<String> permissions) {
        this.user = user;
        this.permissions = permissions;
    }

    @JSONField(serialize = false)
    private List<GrantedAuthority> authorities;
    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        if(authorities!=null){
            return authorities;
        }
        //把permissions中字符串类型的权限信息转换成GrantedAuthority对象存入authorities中
        authorities = new ArrayList<>();
        if (ConstMsg.STUDENT_RIGHT_CODE.equals(user.getUserIdentity())){
           authorities.add(new SimpleGrantedAuthority("student"));
        }
        else if (ConstMsg.TEACHER_RIGHT_CODE.equals(user.getUserIdentity())){
            authorities.add(new SimpleGrantedAuthority("teacher"));
        }
        return authorities;
    }

    @Override
    public String getPassword() {
        return user.getUserPassword();
    }

    @Override
    public String getUsername() {
        return user.getUserPhoneNum();
    }

    @Override
    public boolean isAccountNonExpired() {
        return true;
    }

    @Override
    public boolean isAccountNonLocked() {
        return true;
    }

    @Override
    public boolean isCredentialsNonExpired() {
        return true;
    }

    @Override
    public boolean isEnabled() {
        return true;
    }
}
